Sort of, but not really. It's more that people get complacent/ignorant when it comes to matters of power (they shy away), so by choosing to let go (a selfish endeavor) - a power vacuum is created, which others seize the opportunity for their own interest. In other words, democracy is not self-sustaining, it requires constant participation by everyone in order to sustain. As soon as people opt out, you have a minority determining things for everyone, and so you're no longer truly a democracy.